It's a great idea Andrew but it may be difficult to get it up and running.
I'm very recently back from 4 weeks in France; apart from the meet at Amboise it was a decidedly lonely experience. (Hitherto I'd had me Labrador with me, she was a great conversation starter... as well as a good companion.)
I did post, in different sub forums here, a couple of msgs saying that I was going ... seemingly there were no other single M/H'ers about at that time.
I'll watch with interest
Edit: afterthought... there was a positive aspect, I didn't have to share any of me single malts